f be a real function such that f(x+y) =f(x)f(y). If f(1) = a, what is the valueof f(50) ?
Question
If be a real function such that
If , what is the value of ?
Solution
The function f(x+y) = f(x)f(y) is known as a Cauchy functional equation.
Given that f(1) = a, we can find the value of f(50) by using the property of the function repeatedly.
Step 1: We know that f(1) = a.
Step 2: We can express 50 as 1+1+1+...+1 (50 times).
Step 3: Using the property f(x+y) = f(x)f(y), we can write f(50) as f(1+1+...+1) = f(1)f(1)...f(1) (50 times) = aaa*...*a (50 times) = a^50.
So, the value of f(50) is a^50.
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